Cyclohexanecarbonyl chloride → Cyclohexanecarboxylic acid {2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yl)-piperazin-1-yl-]ethyl}-amide

HRID 381264

Reaction equation

HRID 381264 reaction equation
[O:1]1[C:6]2[CH:7]=[CH:8][CH:9]=[C:10]([N:11]3[CH2:16][CH2:15][N:14]([CH2:17][CH2:18][NH2:19])[CH2:13][CH2:12]3)[C:5]=2[O:4][CH2:3][CH2:2]1.[CH:20]1([C:26](Cl)=[O:27])[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]1>ClCCl>[O:1]1[C:6]2[CH:7]=[CH:8][CH:9]=[C:10]([N:11]3[CH2:12][CH2:13][N:14]([CH2:17][CH2:18][NH:19][C:26]([CH:20]4[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]4)=[O:27])[CH2:15][CH2:16]3)[C:5]=2[O:4][CH2:3][CH2:2]1

Participants

4

Reactant 2

HCID 75938Cyclohexanecarbonyl chlorideHCID 105876411-(2-Amino-1-ethyl)-4-(1,4-benzodioxan-5-yl)piperazine

Product 1

HCID 9799670Cyclohexanecarboxylic acid {2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yl)-piperazin-1-yl-]ethyl}-amideYield 88.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 2-[4-(2,3-dihydro-benzo[1,4]dioxin-5-yl)-piperazin-1-yl-]ethylamine (0.20 g, 0.76 mmol) in dichloromethane (5 mL) was treated with cyclohexanecarbonyl chloride (0.11 g, 0.76 mmol) at 0° C. under a nitrogen atmosphere. The resulting mixture was stirred overnight, during which time it came up to room temperature. The product was precipitated by the addition of hexane to yield the hydrochloride semihydrate salt of the titled compound (0.25 g, 80%) as a white solid; mp=165-166° C.; MS (+) ESI m/z=374 (M+H)+.

Workup

  1. customcame up to room temperature
  2. customThe product was precipitated by the addition of hexane

Sources & evidence

ORD record
ord-74316bd8a50748ecbdefea8f7c1c0a0c
Source dataset
uspto-grants-2001_10
Patent number
US06306859B1

Linked notes

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